Flow Measurement
SITRANS F M
Transmitter TRANSMAG 2 with sensor 911/E
3/109
Siemens FI 01 · 2014
Important:
The rings must be ordered together with the sensor.
In case of replacement please include the sensor MLFB code on
the order.
911/E sensor
Process connection
Nominal diameters
DN 15 ... 1000 (½" ... 40")
Metering tube connections
EN 1092-1, ANSI B16.5, others on
request
Rated operating conditions
Installation conditions
See system information
• Soft rubber liner
0 ... 70 °C (32 ... 158 °F)
• Hard rubber liner
0 ... 90 °C (32 ... 194 °F)
Option: 100 °C (212 °F)
• PTFE liner
• -20 ... +150 °C (-4 ... +302 °F)
at 25 bar (363 psi)
• -20 ... +100 °C (-4 ... +212 °F)
at 40 bar (580 psi)
• Linatex (rubber) liner
-40 ... +70 °C (-40 ... +158 °F) (for
temperatures below -20 °C (-4 °F)
AISI 316L/1.4404 flanges must be
used)
• Novolak liner
130 °C (266 °F) at 40 bar (580 psi)
Degree of protection
IP67/NEMA 4X
Optional IP68/NEMA 6
Medium conditions
Maximum flow velocity
12 m/s (39.4 ft/s)
Full scale value of flow velocity
0.15 ... 12 m/s (0.49 ... 39.4 ft/s)
Design
Weight
See dimensional drawings
Flange and housing material
Mild steel (1.0460/1.0570, with
corrosion resistant two compo-
nent epoxy coating (min. 150
m)
or
AISI 316Ti/1.4571 flanges and car-
bon steel housing, with corrosion-
resistant two-component epoxy
coating (min. 150
m)
Measuring pipe material
Stainless steel AISI 316Ti/1.4571
Electrode material
• AISI 316Ti/1.4571
• PTFE: Hastelloy C276/2.4819
• Platinum head
• Titanium
• Tantalum
Grounding electrode material
Defined via the Order code
Protection rings for liners
Function
To protect the edges of liners from
abrasion (e.g. gravel, sand etc.).
Used mainly with soft rubber liners
and for PTFE liners at high
temperatures from 100 to 150 °C
(212 to 302 °F).
Contact with
medium
Yes, please always check resistance
to measured medium.
Material
Stainless steel AISI 316Ti/1.4571,
optionally Hastelloy C276/2.4819
Material thickness The overall length of the sensor is
increased by
•6 mm for DN 15 to DN 150
(0.24“ for ½“ to 6“) or
•10 mm for DN 200 to DN 600
(0.4“ for 8“ to 24“)
Standard
No, optional for PTFE and soft rubber
liners. They are required for PTFE lin-
ers of PN 16 (MWP 232 psi) or more
instead of protection washers, and
must be ordered separately.
Article No.
7ME5912-....
Earthing washers
Function
Electrical reference and earthing of
the medium. Required if the pipelines
are not electrically conducting or are
lined (plastic pipelines, concrete
pipelines etc.). All earthing rings must
be connected to the earthing screw
present on the sensor.
Contact with
medium
Yes, please always check resistance
to measured medium.
Material
Stainless steel AISI 316Ti/1.4571 or
Hastelloy C4/2.4610
Material thickness The overall length of the sensor is
increased by 2 mm (0.08“) per
earthing ring.
Standard
No, only optional. Required between
the medium and sensor for equipo-
tential bonding between non-con-
ducting pipelines or lined pipelines.
Article No.
7ME5902-....
FI01_2014_en_Kap03.book Seite 109 Montag, 11. November 2013 4:45 16
© Siemens AG 2013
icenta Controls Ltd
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Fax: +44 (0)1722
e: [email protected] www.icenta.co.uk
